Harrow drawbar



2 Sheet-s-Sheetl l G. O. GROSS HARROW DRAWBAR Filed April 6, 1940 Nov. 25, 1941.

Q ww Q KN xav S NN wn.. N @fk A w Q m Nov. 25, 1941; G. o. GROSS HARROW DRAWBAR 2 sheets-sheet 2l Filed April 6, 1940 In ventor 6225er? 0. @msg Patented Nov. 25, 1941 UNITED STATES PATENT OFFICE HARROW DRAWBAR Gilbert O. Gross, Greenfield, Iowa Application April 6, 1940, Serial No. 328,285

1 Claim.

This invention appertains to new and useful improvements in draw bars for harrows, and more particularly to a draw bar which can be folded conveniently with the principal objects in mind of permitting the harrow to be moved through narrow spaces or collapsed for the purpose of storage in limited space.

Another important object of the invention is to provide a harrow draw bar of the character stated which can be readily adjusted to meet various requirements.

Other objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a top plan view of a complete draw bar, j

Figure 2 is a top plan View of the draw bar modified to three sections,

Figure 3 is a top plan view of a harrow draw bar modied to two sections,

Figure 4 is an enlarged fragmentary top plan view of one end of the harrow draw bar shown in Figure l with parts in section,

Figure 5 is a section on the line 5-5 of Figure 1,

Figure 6 is a section on the line 6-6 of Figure 3,

Figure 7 is a perspective view of one of the coupling links.

Referring to the drawings wherein like numerals designate like parts it can be seen in Figure 3, that numeral 5 denotes a bar provided with clamps B having agricultural implement attaching links 1 secured in place by bolts 9.

As shown in Figure 4, a second bar is provided and is held in spaced relation from the first bar 5 b-y spacers II, which are interposed between the ends of the bars 5 and I0 and through which eye-bolts I2 are disposed. Each eye-bolt is equipped with an eye I3 at one end and a nut |4 at its opposite end.

Numeral I5 denotes a hitch for the draw bar and this consists of a double eye member I6. A pair of rods 2| and 22 are provided forwardly of the bar I0 and have eyes 23 and 24, respectively, linked with the eyes I3 and the bolts I2 (see Figure 4). The remaining ends of the rods 2| and 22 are provided with eyes I9 and 2|), respectively, it being observed that the rod is shorter than the rod 22. The eyes I9 and 20 are connected by a chain and this chain is in turn connected to one eye of the double eye member I6.

A clamp 25 is secured to the intermediate portion of the bar I0 and is connected by the chain 26 to the V-shaped member 21 which has end hooks engaged with the chain I1 at opposite sides of the double eye member I6.

A V-shaped brace Illa is interposed between the intermediate portion of the bars 5 and I0.

The foregoing makes up a two-section harrow draw b-ar.

To accommodate an additional section, the draw bar is modified as shown in Figure 2, by shifting the clamp 25 to the left and connecting the V-shaped hook member 21 to the chain at a point closer to the short rod 2|. An eX- tension 30 is provided on this end of the bar 5 and this extension consists of a bar 3| having clamps 32-32 thereon for accommodating links or clevises la. A clamp 33 is provided at the intermediate portion of the bar 3| and a brace rod 34 extends therefrom to the adjacent bolt I2, this brace rod 34 having an eye 35 at its inner end through which the adjacent bolt I2 extends, as clearly shown in Figure 4. A strap member 3S has one end secured to the inner end of the section 3| as at 3'! While its other end is formed with an opening for receiving the nut engaging end of the adjacent bolt I2.

When both wing sections 39a and 38a are employed as shown in Figure l, the hitch I5 is moved b-ack to a central portion as in the case oi the two harrow section draw bar disclosed in Figure 3.

Obviously, the wing sections 30a can be removed at will, or swung upon the intermediate section for the purpose of permitting storage in a small space or to permit the harrow and draw bar to pass through a narrow space.

While the foregoing specication sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the in-Y vention as claimed hereinafter.

Having described the invention, what is claimed as new is:

A draw bar for sectional harrows comprising a pair of connected parallel spaced bars, one of said bars provided with harrow attaching means thereon, a slide member on the other bar, a short rod loosely connected at one end to one end of the last-mentioned bar, a longer rod loosely connected at one end to the remaining end of the same bar, an elongated flexible element connecting the remaining ends of the rods, a hook ad# justably engaged with the elongated flexible element, a connection between the hook and the slide member, and a swingably connected wing member at the short rod end of the draw bar, and harrow attaching means on the Wing member.

GILBERT O. GROSS. 

